These pants are amazingly warm- these are real military issue Protective Combat Uniform (PCU) Level 7 trousers- the warmest, most insulated trousers in the US military inventory made for extreme cold situations. Insulated with Primaloft they are extremely high loft and warm, water resistant, breathable, and rugged. Made in the USA. These feature full length zippers up each leg to make them easy to put one and off over clothing and boots, abrasion resistant panels on the knees, velcro and elastic size adjustment and more.
You won't find a warmer, more rugged set of pants for the price.
sizing note- these run BIG. A full size + a few inches bigger than regular BDU/ACU sizing. They are sized to wear over many other layers if needed, but for most people you will not wear them over that many layers, I wear a medium BDU and I can wear a small in these over my regular pants.